also stand-off, 1843, "draw, tie," from the verbal phrase (c. 1600), from stand (v.) + off (adv.). Mexican stand-off "stalemate" is recorded from 1891.
also offshore, 1720, "in a direction away from the shore," from off (prep.) + shore (n.). As an adjective in 19c., "carried on more than three miles from shore." American English use for "other than the U.S." is from 1948 and the Marshall Plan.
1570s, of firearms, etc., "explode, be discharged;" see go (v.) + off (adv.); meaning "depart" is c. 1600; that of "deteriorate in condition" is from 1690s; that of "reprimand" is from 1941 (originally with at, since c. 2000 more often with on).
1709, "put aside, rejected," from verbal phrase cast off "discard, reject" (c. 1400), from cast (v.) + off (adv.). From 1741 as a noun, "person or thing abandoned as worthless or useless." Related" Cast-offs.